CN215705510U

CN215705510U - Hook traction device and transportation equipment

Info

Publication number: CN215705510U
Application number: CN202122372514.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Guangdong Lyric Robot Intelligent Automation Co Ltd
Current assignee: Guangdong Lyric Robot Automation Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-02-01
Anticipated expiration: 2031-09-28

Abstract

The application relates to a hook traction device and transportation equipment, and relates to the field of traction locking devices. The hook traction device comprises a hook part provided with a hook hole; a locking portion including a base and a plug, the plug being movable relative to the base; and the guide assembly comprises a first guide part and a second guide part, the first guide part and the locking part form an accommodating space, the second guide part is used for guiding the hook part to the accommodating space, the first guide part is used for guiding the hook hole to be aligned with the bolt along the first direction, at least part of the bolt is configured to be capable of extending into the accommodating space and is arranged in the hook hole to be locked with the hook part. The couple draw gear of this application, the setting of first guide and second guide can play the guide effect to couple portion, does not need operating personnel to operate, can realize that couple hole aligns along the first direction with the bolt for this couple draw gear has higher degree of automation.

Description

Hook traction device and transportation equipment

Technical Field

The application relates to the field of traction locking devices, in particular to a hook traction device and transportation equipment.

Background

The traction transport vehicle is a common transport device when carrying out low-speed, short-distance and small-range transportation. Among them, an AGV (Automated Guided Vehicle) is widely used in various fields as a traction transport Vehicle that can travel along a predetermined navigation route without a driver and has safety protection and various loading functions.

When the AGV transports the task, in order to improve conveying efficiency, need pass through locking device with the AGV and be connected with the trailer, locking device among the prior art, degree of automation is low, needs operating personnel to carry out artifical calibration, just can realize locking and unblock between AGV and the trailer, and degree of automation remains further improvement.

SUMMERY OF THE UTILITY MODEL

The purpose of this application is to provide a couple draw gear and transportation equipment, this couple draw gear's locking portion can align with couple portion automatically, has higher degree of automation.

In one aspect, the present application provides a hook traction device comprising a hook portion, the hook portion having a hook aperture; a locking portion including a base and a plug configured to be slidably coupled to the base in a first direction; the guide assembly comprises a first guide piece and a second guide piece, the first guide piece and the second guide piece are both installed on the locking portion, the first guide piece and the locking portion form an accommodating space, the second guide piece is used for guiding the hook portion to the accommodating space, the first guide piece is used for guiding the hook hole to be aligned with the plug pin along the first direction, at least part of the plug pin is configured to be capable of extending into the accommodating space and is arranged in the hook hole to be locked with the hook portion.

The utility model provides a couple draw gear, through setting up the direction subassembly, the direction subassembly includes first guide and second guide, the second guide is arranged in leading to accommodation space with the couple portion that has the couple hole, afterwards, first guide is arranged in leading to aligning along the first direction with the bolt with couple portion's couple hole, so that when the bolt removes along the first direction, the bolt can be inserted and locate in the couple hole, and then realize bolt and couple portion locking, locking portion and couple portion locking promptly. The setting of first guide and second guide can play the guide effect to couple portion, does not need the operating personnel operation, can realize that couple hole aligns along the first direction with the bolt for this couple draw gear has higher degree of automation.

In some embodiments of the present application, the first guide is provided with a notch extending from an edge of the first guide toward a central axis of the first guide in a second direction, the notch and the locking portion constituting an accommodation space, the central axis of the first guide being parallel to the first direction, and the second direction being perpendicular to the first direction.

In the above scheme, in this arrangement, an accommodating space is defined by the first guide piece and the locking part, that is, the positions of the hook part and the latch for locking and unlocking are defined, and the latch can extend into the accommodating space to be locked with the hook part.

In some embodiments of the present application, the first guide member has a first inner side, a second inner side, and a third inner side, the third inner side connecting the first inner side and the second inner side, the first inner side, the second inner side, and the third inner side enclosing a gap.

In the above scheme, according to the arrangement mode, the first guide piece is used for aligning the hook hole of the hook part with the plug pin finally, the aligning process does not need intervention of an operator, and the automation degree is high.

In some embodiments of this application, the third medial surface is the curved surface, and couple portion has the butt portion that is used for corresponding with the third medial surface, and butt portion is the arc setting, and when butt portion and third medial surface butt, the couple hole aligns with the bolt along first direction.

In the above scheme, this kind of mode of setting, butt portion and the matching that the third medial surface can be better to make couple portion can realize the locate function in couple hole through butt portion, the couple hole of being convenient for aligns with the bolt.

In some embodiments of the present application, the second guide member includes a guide groove communicating with the accommodating space, an extending direction of the guide groove having an angle with the first direction, the guide groove for guiding the hook portion to the accommodating space.

In the above scheme, this kind of arrangement, the second guide passes through the guide slot and leads couple portion to accommodation space, and simple structure is practical, and the guide slot can lead couple portion to accommodation space from a plurality of directions, has great application scope.

In some embodiments of the application, the locking portion further comprises an actuating mechanism, an actuating end of the actuating mechanism being coupled to an end of the bolt to actuate the bolt to slide relative to the base.

In the above scheme, the locking part comprises the driving mechanism, and the bolt is driven by the driving mechanism, so that the bolt moves relative to the base, namely, the bolt and the hook hole of the hook part are locked and unlocked, and the automation degree of the hook traction device is further improved.

In some embodiments of the application, the locking portion further comprises a resilient member for connecting the actuating end of the actuating mechanism with the bolt.

In above-mentioned scheme, the setting of elastic component can avoid actuating mechanism directly to exert great effort to the bolt, and when the bolt was not alignd with hook portion's couple hole, the bolt moved to hook portion, will produce great stress between bolt and hook portion to probably lead to bolt and hook portion to interfere and damage.

In some embodiments of the application, the hook pulling device further comprises a cover plate detachably connected to a side of the first guide member facing away from the base for covering the latch.

In the above scheme, this kind of mode of setting, the apron can play certain guard action to the plug pin, simultaneously, when actuating mechanism damages or became invalid, can separate apron and first guide to manual unblock has improved this couple draw gear's suitability.

In some embodiments of the present application, the hitch towing arrangement further comprises a position sensor for detecting a position of the hitch portion.

In the above scheme, the accuracy of the hook traction device can be further improved by the arrangement of the position sensor, and the problem that the bolt and the hook hole cannot be aligned is avoided.

In another aspect, the present application further provides a transportation apparatus comprising a first vehicle; a second vehicle; the hook traction device is arranged; wherein, the couple portion sets up in one of first vehicle and second vehicle, and the locking part sets up in the other one of first vehicle and second vehicle.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view of a hitch towing attachment provided in accordance with an embodiment of the present application;

FIG. 2 is a cross-sectional view of a locking portion provided in an embodiment of the present application;

fig. 3 is a schematic view of a first guide member according to an embodiment of the present disclosure.

Icon: 1-hook traction device; 10-a hook portion; 11-hook hole; 20-a locking portion; 21-a base; 22-a latch; 23-an accommodation space; 24-a cover plate; 25-a drive mechanism; 251-a power source; 252 — a first transmission; 253-a second transmission; 26-an elastic member; 27-a protective cover; 28-position sensor; 30-a guide assembly; 31-a first guide; 311-a first medial side; 312-a second medial side; 313-a third medial side; 32-a second guide; 321-a guide groove; 322-a baffle; 33-notch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In view of this, the purpose of this application is to provide a couple draw gear, this couple draw gear is used for improving AGV and trailer, alternately, carries out the location accuracy when locking and unblock between trailer and the trailer, and need not the operating personnel and carry out manual calibration, has higher degree of automation.

The hitch towing device of the present application is described in detail below with reference to the accompanying drawings.

In one aspect, as shown in fig. 1, the present application provides a hitch towing apparatus 1, the hitch towing apparatus 1 including a hitch portion 10, a locking portion 20, and a guide assembly 30.

As shown in fig. 1, the hooking portion 10 is provided with a hooking hole 11; the lock part 20 includes a base 21 and a plug 22, and the plug 22 is configured to be slidably coupled to the base 21 in the first direction X. The guide assembly 30 includes a first guide 31 and a second guide 32, the first guide 31 and the second guide 32 are both mounted to the locking part 20, and the first guide 31 forms an accommodating space 23 with the locking part 20, the second guide 32 is used to guide the hooking part 10 to the accommodating space 23, and the first guide 31 is used to guide the hooking hole 11 to be aligned with the plug 22 in the first direction X. Meanwhile, at least a part of the insert pin 22 is configured to be able to extend into the receiving space 23 and to be inserted into the hook hole 11 so that the insert pin 22 is locked with the hook part 10, that is, the locking part 20 is locked with the hook part 10.

It is noted that the first direction X is a height direction of the locking portion 20 of the hitch draft apparatus 1, for example, the X direction in fig. 1 and 2 is the first direction. It should be noted that the Y direction in fig. 1 and 2 is the second direction, the second direction Y is the longitudinal direction of the locking portion 20 of the hitch towing device 1, the Z direction in fig. 1 and 2 is the third direction, and the third direction Z is the width direction of the locking portion 20 of the hitch towing device 1. In some specific embodiments, the first direction X is a vertical direction, and the second direction Y and the third direction Z are horizontal directions.

Here, the plug 22 extends along the first direction X, that is, the axial direction of the plug 22 is the first direction X, and the plug 22 is configured to be slidably connected to the base 21 along the first direction X, and it can be understood that the plug 22 is slidably connected to the base 21 along the axial direction thereof. The locking of the plug 22 to the hook 10 does not mean that the plug 22 and the hook 10 cannot move relative to each other at all, and the locking of the plug 22 to the hook 10 means that a force in a horizontal direction can be transmitted between the plug 22 and the hook 10. At the same time, the plug pin 22 and the hooking part 10 are able to move relatively in the first direction X, i.e. in the vertical direction, and the hooking part 10 is able to rotate with respect to the plug pin 22 along the axis of the plug pin 22.

Further, the alignment of the hook hole 11 and the plug 22 along the first direction X means that the central axis of the hook hole 11 coincides with the central axis of the plug 22 along the first direction X, so that the plug 22 can be inserted into and pass through the hook hole 11 when moving relative to the base 21 along the first direction X. The first guide 31 serves to guide the hook hole 11 to be aligned with the plug pin 22 in the first direction X, that is, by adjusting the position of the hook hole 11 so that the hook hole 11 of the hook portion 10 is aligned with the plug pin 22, that is, adjusting the position of the hook hole 11 so that the central axis of the hook hole 11 coincides with the central axis of the plug pin 22.

The hook traction device 1 of the application, through setting up the guide assembly 30, the guide assembly 30 includes first guide 31 and second guide 32, the second guide 32 is used for leading the couple portion 10 that has couple hole 11 to accommodating space 23 in, later, first guide 31 is used for leading the couple hole 11 of couple portion 10 to aligning along first direction X with bolt 22, so that when bolt 22 moves along first direction X, bolt 22 can insert and locate in couple hole 11, and then realize bolt 22 and couple portion 10 locking, locking portion 20 locks with couple portion 10 promptly. The arrangement of the first guide part 31 and the second guide part 32 can guide the hook part 10, and the hook hole 11 and the plug 22 can be aligned along the first direction X without the operation of an operator, so that the hook traction device 1 has high automation degree.

As shown in fig. 2 and 3, in some embodiments of the present application, the first guide 31 has a notch 33, the notch 33 extends from an edge of the first guide 31 toward a central axis of the first guide 31 in the second direction Y, and the notch 33 is used to form the accommodating space 23 together with the lock portion 20. The central axis of the first guide 31 is parallel to the first direction X, and the second direction Y is perpendicular to the first direction X.

The receiving space 23 refers to a cavity portion between the notch 33 of the first guide 31 and the top and bottom surfaces of the first guide 31 in the first direction X. As shown in the figures, the receiving space 23 can also be understood as a cavity portion between the notch 33 of the first guide 31, the top surface of the base 21 and the bottom surface of the cover plate 24, i.e. the notch 33 and the locking part 20 together form the receiving space 23. The area of the notch 33 at the edge of the first guide 31 is the opening of the receiving space 23.

Further, in some embodiments of the present application, the projection of the first guide 31 is located inside the projection of the base 21 along the first direction X, so that there is a large overlapping area between the first guide 31 and the base 21, and accordingly, the arrangement is such that the volume of the accommodating space 23 is large, so that the hook portion 10 protrudes into the accommodating space 23.

Also, as shown in FIG. 2, in some embodiments of the present application, latch 22 is located inside base 21. It will be understood that, along the first direction X, the projection of the plug 22 is located inside the projection of the housing space 23, and this arrangement is such that, when the plug 22 slides relative to the base 21 along the first direction X, the plug 22 can extend into the housing space 23.

Specifically, a through hole is formed in a side of the base 21 facing the first guide 31, and the plug 22 can extend out of the through hole and extend into the accommodating space 23.

As shown in fig. 3, in some embodiments of the present application, the first guide 31 has a first inner side 311, a second inner side 312, and a third inner side 313. Third medial side 313 is configured to connect first medial side 311 to second medial side 312. It will also be appreciated that the first guide member 31 is enclosed by the first inner side 311, the second inner side 312 and the third inner side 313 and defines the gap 33 of the first guide member 31.

As shown in fig. 2 and 3, in some embodiments of the present application, the first inner side 311 and the second inner side 312 are both planar, and an open gap 33 is formed between the first inner side 311 and the second inner side 312. It will be appreciated that first inner side 311, second inner side 312, and third inner side 313 are V-shaped and define an open notch 33. The open shape means that, along the third direction Z, the size of the side of the first guide 31 where the notch 33 is formed, that is, the size of the notch 33 is larger than the size of the side of the first guide 31 away from the notch 33. This kind of mode of arrangement, through having open breach 33 and locking portion 20 formation accommodation space 23, after couple portion 10 leads accommodation space 23 through second guide 32, be convenient for couple portion 10 stretches into accommodation space 23, and be convenient for later first guide 31 leads couple portion 10 to the position that corresponds with bolt 22 through first medial surface 311, second medial surface 312 and third medial surface 313, when couple hole 11 of couple portion 10 aligns along first direction X with bolt 22, the position of couple portion 10 promptly.

As shown in fig. 3, in some embodiments of the present application, the third inner side surface 313 is a curved surface, and the third inner side surface 313 is a curved surface, such that the third inner side surface 313 extends along a curve in a direction perpendicular to the first direction X, i.e. a horizontal direction, it is understood that the third inner side surface 313 does not have an arc in the first direction X, i.e. the curvature of the third inner side surface 313 in the first direction X is zero, and it is also understood that a projection of the third inner side surface 313 on a plane perpendicular to the first direction X is a curved line. This kind of mode of arrangement, be convenient for connect first medial surface 311 and second medial surface 312 through third medial surface 313, especially when first medial surface 311 and second medial surface 312 are the plane, the both ends of third medial surface 313 that is zero along first direction X camber can directly be connected with first medial surface 311 and second medial surface 312 respectively, and need not newly increase the face that is used for the transition. In other embodiments of the present application, the third inner side surface 313 may be a curved surface, and the third inner side surface 313 may be a curved surface in all directions, for example, the third inner side surface 313 may be a spherical surface, an ellipsoidal surface, a paraboloidal surface, a hyperboloid surface, or the like.

Further, in some embodiments of the present application, when the curvature of the third inner side surface 313 in the first direction X is zero, that is, the projection of the third inner side surface 313 on the plane perpendicular to the first direction X is a curve, the trajectory of the curve may be an arc of a circle, or the trajectory of the curve may also be an elliptical arc at one end of an ellipse taken symmetrically along the symmetry axis, or the trajectory of the curve may also be a parabola, a hyperbola, a catenary, or the like.

Further, in some embodiments of the present application, the hook portion 10 has an abutting portion for corresponding to the third inner side surface 313, and the abutting portion is disposed in an arc shape. The abutting portion may be curved, that is, the abutting surface may be a curved surface, and the abutting surface is a curved surface corresponding to the third inner side surface 313.

For example, in some embodiments of the present application, the abutment surface may be a spherical surface, an ellipsoidal surface, a hyperboloid surface, or the like; in other embodiments of the present application, when the curvature of the abutting surface in the first direction X is zero, that is, the projection of the abutting surface on the plane perpendicular to the first direction X is a curve, the trajectory of the curve may be an arc of a circle, or the trajectory of the curve may also be an elliptic arc at one end of an ellipse taken symmetrically along the symmetry axis, or the trajectory of the curve may also be a parabola, a hyperbola, a catenary, or the like.

Further, in some embodiments of the present application, the hooking hole 11 of the hooking portion 10 may be a hole with a closed structure or a hole with a non-closed structure. For example, as shown in fig. 1, the hook hole 11 may be a through hole opened in the hook portion 10, and in this case, the hook hole 11 may be a hole having a closed structure. For example, the hook hole 11 may be a hollow portion in the middle of the hook portion 10 formed by bending, and in this case, the hook hole 11 is a hole having a non-closed structure, in other words, a projected contour of the hook hole 11 in a plane perpendicular to the first direction X is not a continuous line. It should be noted that the hook portion 10, which is partially formed by bending, may have a closed hollow portion, and in this case, the hook hole 11 is a hole having a closed structure.

As shown in fig. 1, in some embodiments of the present application, the second guide 32 includes a guide groove 321, and the guide groove 321 communicates with the accommodating space 23, so that the second guide 32 guides the hook part 10 to the accommodating space 23 through the guide groove 321. The guide groove 321 may be disposed at the bottom of the accommodating space 23 along the first direction X and communicate with the accommodating space 23. With this arrangement, the guide groove 321 can overcome the gravity of the hook portion 10, and the hook portion 10 can be guided to the accommodating space 23 through the guide groove 321.

Further, as shown in fig. 1, the extending direction of the guide groove 321 forms an angle with the first direction X, that is, the guide groove 321 is disposed diagonally. For example, as shown in fig. 1, the guide groove 321 may be disposed diagonally downward, and it is understood that one end of the guide groove 321 is connected to the base 21 and the other end of the guide groove 321 extends diagonally downward.

As shown in fig. 1, the guide groove 321 may be a dovetail groove, and this arrangement can increase the position where the guide groove 321 can abut against the hook portion 10, so that the second guide 32 can guide the hook portion.

As shown in fig. 1, in some embodiments of the present application, the second guide member 32 further includes a blocking plate 322, an extending direction of the blocking plate 322 is identical to an extending direction of the guide groove 321, and the blocking plate 322 can be disposed at edges of both ends of the guide groove 321 along the third direction Z, so that the second guide member 32 can stably guide the hook portion 10, and the hook portion 10 is prevented from being released from the second guide member 32.

As shown in fig. 2, in some embodiments of the present application, the locking portion 20 further includes an actuating mechanism 25, and an actuating end of the actuating mechanism 25 is connected to an end of the plug 22 to actuate the plug 22 to move along the first direction X relative to the base 21, so as to achieve the functions of inserting the plug 22 into the hook hole 11 and removing the plug 22 from the hook hole 11, that is, locking the hook portion 10 relative to the locking portion 20 and unlocking the hook portion 10 relative to the locking portion 20.

Specifically, as shown in FIG. 2, in some implementations of the present application, the drive mechanism 25 includes a power source 251. The power source 251 may be a linear driving mechanism 25, for example, the power source 251 may be an air cylinder and pneumatically drives the latch 22, or the power source 251 may be a hydraulic cylinder and hydraulically drives the latch 22. In other embodiments of the present application, the power source 251 may also be a linear motor, or a lead screw and nut mechanism, etc. capable of driving the plug 22 to move linearly along the first direction X. In still other embodiments of the present application, the power source 251 may be a motor driving in cooperation with a rack and pinion mechanism, or a belt driving mechanism or a chain driving mechanism.

Further, as shown in fig. 2, in some embodiments of the present application, the driving mechanism 25 further includes a transmission assembly, one end of the transmission assembly is connected to the output end of the power source 251, and the other end of the transmission assembly is connected to one end of the plug 22, and the transmission assembly is configured to transmit the movement of the output end of the power source 251 to the plug 22, so that the plug 22 can move along the first direction X.

Specifically, in some embodiments of the present application, the transmission assembly includes a first transmission member 252 and a second transmission member 253. As shown in fig. 2, the direction of movement of the latch 22 is opposite to the direction of movement of the output end of the power source 251, and it can be understood that one end of the first transmission member 252 is connected to the output end of the power source 251, the other end of the first transmission member 252 is connected to one end of the second transmission member 253, and the other end of the second transmission member 253 is connected to one end of the latch 22 as an actuating end of the driving mechanism 25. Wherein the transmission assembly may form a lever between power source 251 and bolt 22 to reverse the direction of movement of the output end of power source 251 and bolt 22. For example, as shown in fig. 2, when the output end of the power source 251 moves downward along the first direction X, the end of the first transmission member 252 connected to the power source 251 moves downward, the first transmission member 252 acts as a lever, and the end of the first transmission member 252 connected to the second transmission member 253 moves upward, so that the second transmission member 253 moves upward along the first direction X and drives the latch 22 to move upward along the first direction X. In this arrangement, the moving direction of the output end of the power source 251 is opposite to the moving direction of the plug 22, that is, the power source 251 and the plug 22 can be arranged in parallel along the first direction X, without arranging the power source 251 and the plug 22 on the same straight line, so that the total length of the locking part 20 of the hook traction device 1 is reduced, and the locking part 20 has a compact structure and occupies a small space.

In other embodiments of the present application, the driving mechanism 25 may not include a transmission assembly, in which case, the output end of the power source 251 is directly connected to one end of the plug 22, the power source 251 and the plug 22 are arranged in a line along the first direction X, and the output end of the power source 251 is in the same direction as the movement direction of the plug 22.

Further, as shown in fig. 2, in some embodiments of the present application, the locking portion 20 of the hook traction device 1 further includes an elastic member 26, the elastic member 26 is used for connecting the actuating end of the driving mechanism 25 and the plug 22, that is, the elastic member 26 is disposed between the actuating end of the driving mechanism 25 and the plug 22. For example, as shown in fig. 2, when the driving mechanism 25 includes a transmission component, the elastic member 26 is used to connect the transmission component and the bolt 22, i.e. the elastic member 26 is disposed between the transmission component and the bolt 22; when the driving mechanism 25 does not include a transmission assembly, the output end of the power source 251 is the execution end of the driving mechanism 25, and the elastic element 26 is used to connect the output end of the power source 251 and the plug 22, i.e. the elastic element 26 is disposed between the output end of the power source 251 and the plug 22. When the latch 22 is not aligned with the hooking hole 11 of the hooking part 10, and the driving mechanism 25 drives the latch 22, the latch 22 will interfere with the hooking part 10, so as to avoid the damage of the latch 22 or the hooking part 10 caused by the excessive stress between the latch 22 and the hooking part 10, the elastic member 26 is provided to buffer the force applied to the latch 22 by the driving mechanism 25.

In some embodiments of the present application, the elastic member 26 may be a spring, and the length and modulus of elasticity of the spring are selected according to the amount of elastic force required and the distance the plug 22 moves along the first direction X. In other embodiments of the present application, the elastic member 26 may also be a rubber block or a silicone block.

As shown in fig. 1 and 2, in some embodiments of the present application, the hook pulling device 1 further includes a cover plate 24, the cover plate 24 is detachably connected to the first guiding element 31, the cover plate 24 is used for covering the inserted pin 22, and at the same time, the cover plate 24 is also used for enclosing the base 21 and the first guiding element 31 to form an accommodating space 23, so that the inserted pin 22 and the hook portion 10 can be locked in the accommodating space 23.

Further, as shown in fig. 1 and 2, in some embodiments of the present application, the cover plate 24, the first guide 31 and the base 21 are sequentially disposed along the first direction X, and the first guide 31 is disposed between the cover plate 24 and the base 21, i.e., the first guide 31 is used for connecting the base 21 and the cover plate 24. It is understood that, along the first direction X, the bottom surface of the first guiding member 31 is attached to the top surface of the base 21, and the first guiding member 31 may be detachably connected to the base 21, the top surface of the first guiding member 31 is attached to the bottom surface of the cover plate 24, and the cover plate 24 is detachably connected to the first guiding member 31.

The detachable connection may be a threaded connection through a threaded fastener (e.g., a bolt), for example, a threaded hole may be formed in the base 21, a countersunk hole corresponding to the threaded hole of the base 21 may be formed in the first guide 31, and a bolt may pass through the countersunk hole of the first guide 31 and be threaded with the threaded hole of the base 21, similarly, a threaded hole may also be formed in the first guide 31, a countersunk hole or a through hole corresponding to the threaded hole of the first guide 31 may be formed in the cover plate 24, and a bolt may pass through the countersunk hole or the through hole of the cover plate 24 and be threaded with the threaded hole of the first guide 31. In other embodiments of the present application, the detachable connection may also be a bayonet connection, or a snap connection.

Further, as shown in fig. 2, the cover plate 24 is detachably attached to the side of the first guide 31 facing away from the base 21 along the first direction X, so that the cover plate 24 can not only cover the latch 22, but also, when the driving mechanism 25 fails, the cover plate 24 can be removed from the first guide 31 and the latch 22 can be manually pushed out from the hooking hole 11 to unlock the latch 22 from the hooking portion 10.

It should be noted that the notch 33 needs to penetrate through the first guide 31 along the first direction X to enable the plug 22 to extend into the accommodating space 23 after penetrating through the through hole formed in the base 21, and when manual unlocking is needed, after the cover plate 24 is separated from the first guide 31, along the first direction, the upper portion of the accommodating space 23 is not covered, and an operator can unlock the plug 22 and the hook portion 10 relatively simply and conveniently.

As shown in fig. 2, in some embodiments of the present application, the hitch towing apparatus 1 further includes a position sensor 28, the position sensor 28 may be provided to the locking portion 20, and the position sensor 28 is used to detect the position of the hitch portion 10. Alternatively, the position sensor 28 may be provided to the cover plate 24. When the hooking hole 11 of the hooking part 10 is aligned with the plug 22 in the first direction X, the driving mechanism 25 drives the plug 22 to move in the first direction X, so that the plug 22 is locked with the hooking part 10.

As shown in fig. 2, in some embodiments of the present application, the locking portion 20 is further provided with a protective cover 27, and the protective cover 27 is provided outside the position sensor 28 to protect the position sensor 28.

In another aspect, the present application also provides a transportation apparatus comprising a first vehicle, a second vehicle and the above-described hitch towing apparatus 1. Wherein the hook part 10 of the hook pulling device 1 is arranged on one of the first vehicle and the second vehicle and the locking part 20 of the hook pulling device 1 is arranged on the other of the first vehicle and the second vehicle.

It should be noted that in some embodiments of the present application, the first vehicle may be a tractor (e.g., AGV) and the second vehicle may be a trailer. In other embodiments of the present application, the first vehicle and the second vehicle may both be trailers.

Taking the example that the first vehicle is an AGV, the locking part 20 is provided on the first vehicle, the second vehicle is a trailer, and the hook part 10 is provided on the second vehicle, when the first vehicle and the second vehicle are connected by the hook traction device 1, the specific steps are as follows:

1. the end of the first vehicle provided with the locking portion 20 moves toward the end of the second vehicle provided with the hook portion 10, and the hook portion 10 is brought into contact with the second guide 32;

2. the first vehicle continues to move toward the second vehicle, and the hooking portion 10 enters the accommodating space 23 along the guide groove 321;

3. the first vehicle continues to move toward the second vehicle, and the abutment portion of the hook portion 10 abuts against the first inner side surface 311 or the second inner side surface 312 of the first guide 31 and moves toward the second inner side surface 312 along the first inner side surface 311 or the third inner side surface 313;

4. the abutting portion of the hook portion 10 abuts against the third inner side surface 313, and the position sensor 28 detects that the plug 22 is aligned with the hook hole 11 of the hook portion 10;

5. the driving mechanism 25 drives the plug 22 to move along the first direction X and makes the plug 22 pass through the hook hole 11, completing the locking of the plug 22 with the hook portion 10, i.e. the locking portion 20 with the hook portion 10.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hitch towing attachment, comprising:

the hook part is provided with a hook hole;

a lock portion including a base and a plug configured to be slidably coupled to the base along a first direction;

a guide assembly including a first guide and a second guide, the first guide and the second guide being mounted to the locking portion, the first guide and the locking portion constituting an accommodation space, the second guide being configured to guide the hooking portion to the accommodation space, the first guide being configured to guide the hooking hole to be aligned with the plug pin in the first direction, at least a portion of the plug pin being configured to be able to extend into the accommodation space and to be inserted into the hooking hole to be locked with the hooking portion.

2. A hook pulling device according to claim 1, wherein the first guide is provided with a notch extending from an edge of the first guide toward a central axis of the first guide in a second direction, the notch and the locking portion constituting the accommodation space, the central axis of the first guide being parallel to the first direction, the second direction being perpendicular to the first direction.

3. A hook pull according to claim 2, wherein the first guide member has a first inner side, a second inner side and a third inner side, the third inner side connecting the first inner side and the second inner side, the first inner side, the second inner side and the third inner side enclosing the gap.

4. A hook pulling device according to claim 3, wherein the third inner side surface is a curved surface, the hook portion has an abutting portion for corresponding to the third inner side surface, the abutting portion is arc-shaped, and when the abutting portion abuts against the third inner side surface, the hook hole is aligned with the plug pin along the first direction.

5. A hook pulling device according to claim 1, wherein the second guide member comprises a guide groove communicating with the receiving space, the guide groove extending in a direction having an angle with the first direction, the guide groove being adapted to guide the hook portion to the receiving space.

6. A hook pull according to claim 1, wherein the lock portion further comprises an actuating mechanism, an actuating end of the actuating mechanism being connected to the bolt to actuate the bolt to slide relative to the base.

7. A hook pull according to claim 6, wherein the lock portion further comprises a resilient member for connecting an actuating end of the drive mechanism to the latch.

8. A hook pull according to claim 1, further comprising a cover plate removably attached to a side of the first guide facing away from the base for covering the latch.

9. A hook traction device as claimed in claim 1, further comprising a position sensor for detecting the position of the hook portion.

10. A transport apparatus, comprising:

a first vehicle;

a second vehicle;

the hook traction device of any one of claims 1-9;

wherein the hook portion is provided to one of the first vehicle and the second vehicle, and the lock portion is provided to the other of the first vehicle and the second vehicle.